On Tonight

A rape case involving domestic violence leads to a break in a 34 year-old murder case.

A man killed in a vicious attack leads the detectives to a community in chaos, centered on a group of teen-aged girls in a “pregnancy pact.

Despite the mystery surrounding Katie, life moves forward at the Firehouse.

Despite his frustration, Severide remains hopeful that justice will be served.

An Air Force captain is shot dead leaving police to suspect his wife and her Army sharpshooter lover.

A driver in rural Washington state comes across a young woman clinging to life - right in the middle of the road. Would she survive? And how did she get there?

A case of mistaken identity leads to tragedy, but the cops believe something is amiss.

Halstead puts his credibility and career on the line to help solve a case with ties to his new girlfriend.

Burgess works with her first criminal informant to track down a ruthless pimp and break up his prostitution ring.

Atwater goes missing and the team digs into his past to discover why he's been taken.